@babylonjs/viewer/dist/chunks/fbxFileLoader-B_pVvFeF.esm.min.js

The Babylon Viewer aims to simplify a specific but common Babylon.js use case: loading, viewing, and interacting with a 3D model.

import{M as e,co as t,bi as n,bu as o,aV as r,F as s,aW as i,V as a,cp as l,i as c,m as u,c1 as f,aU as p,bs as d,aD as h,aR as m,bn as g}from"./index-BPURObVq.esm.min.js";import{S as y}from"./standardMaterial.pure-BRp0YAN-.esm.min.js";import{S as b}from"./skeleton-DinTjF3y.esm.min.js";import{B as v}from"./bone.pure-BcPT5kCP.esm.min.js";import{A as x}from"./animationGroup.pure-Bb9o5BkH.esm.min.js";import{M,a as I,F as w}from"./morphTargetManager-CdEb1BHc.esm.min.js";import{P as A}from"./pointLight.pure-BNtejoTr.esm.min.js";import{S as T}from"./spotLight.pure-5s2DDDIt.esm.min.js";import{A as S}from"./assetContainer-CAncviZo.esm.min.js";import"./prepass.defines-DBIG3K_p.esm.min.js";import"./material.detailMapConfiguration-FEC73qwc.esm.min.js";const C=15,_=[3,4,5,6,7,8,9,10,11,13,15,17,19,23,27,31,35,43,51,59,67,83,99,115,131,163,195,227,258],O=[0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0],N=[1,2,3,4,5,7,9,13,17,25,33,49,65,97,129,193,257,385,513,769,1025,1537,2049,3073,4097,6145,8193,12289,16385,24577],F=[0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13],B=[16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15];class P{constructor(e,t,n){this.input=e,this.byteOffset=t,this.endOffset=n,this.bitBuffer=0,this.bitCount=0}readBits(e){this.ensureBits(e);const t=this.bitBuffer&(1<<e)-1;return this.bitBuffer>>>=e,this.bitCount-=e,t}readBit(){if(0===this.bitCount){if(this.byteOffset>=this.endOffset)throw new Error("zlib: unexpected end of input");this.bitBuffer=this.input[this.byteOffset++],this.bitCount=8}const e=1&this.bitBuffer;return this.bitBuffer>>>=1,this.bitCount--,e}alignToByte(){this.bitBuffer=0,this.bitCount=0}readUint16LE(){if(this.ensureByteAligned(),this.byteOffset+2>this.endOffset)throw new Error("zlib: unexpected end of input");const e=this.input[this.byteOffset]|this.input[this.byteOffset+1]<<8;return this.byteOffset+=2,e}readByte(){if(this.ensureByteAligned(),this.byteOffset>=this.endOffset)throw new Error("zlib: unexpected end of input");return this.input[this.byteOffset++]}ensureByteAligned(){if(0!==this.bitCount)throw new Error("deflate: expected byte alignment")}ensureBits(e){for(;this.bitCount<e;){if(this.byteOffset>=this.endOffset)throw new Error("zlib: unexpected end of input");this.bitBuffer|=this.input[this.byteOffset++]<<this.bitCount,this.bitCount+=8}}}class E{constructor(e){this.offset=0,this.adlerA=1,this.adlerB=0,this.bytes=new Uint8Array(e)}writeByte(e){if(this.offset>=this.bytes.byteLength)throw new Error("zlib: output length mismatch");const t=255&e;this.bytes[this.offset++]=t,this.adlerA+=t,this.adlerB+=this.adlerA,this.adlerA%=65521,this.adlerB%=65521}copy(e,t){if(e<=0||e>this.offset)throw new Error("deflate: distance out of range");for(let n=0;n<t;n++)this.writeByte(this.bytes[this.offset-e])}finish(){if(this.offset!==this.bytes.byteLength)throw new Error("zlib: output length mismatch")}adler32(){return(this.adlerB<<16|this.adlerA)>>>0}}class L{constructor(e,t={}){const n=new Array(16).fill(0);let o=0,r=0;for(const t of e){if(!Number.isInteger(t)||t<0||t>C)throw new Error("deflate: invalid huffman code lengths");t>0&&(n[t]++,o++,r=Math.max(r,t))}if(0===o){if(t.allowEmpty)return this.symbolsByLength=[],void(this.maxCodeLength=0);throw new Error("deflate: invalid huffman code lengths")}let s=1;for(let e=1;e<=C;e++)if(s=(s<<1)-n[e],s<0)throw new Error("deflate: invalid huffman code lengths");if(0!==s&&1!==o)throw new Error("deflate: invalid huffman code lengths");const i=new Array(16).fill(0);let a=0;for(let e=1;e<=C;e++)a=a+n[e-1]<<1,i[e]=a;this.symbolsByLength=Array.from({length:16},(e,t)=>{if(0===n[t])return;const o=new Int16Array(1<<t);return o.fill(-1),o});for(let t=0;t<e.length;t++){const n=e[t];0!==n&&(this.symbolsByLength[n][i[n]++]=t)}this.maxCodeLength=r}decode(e){if(0===this.maxCodeLength)throw new Error("deflate: invalid huffman code");let t=0;for(let n=1;n<=this.maxCodeLength;n++){t=t<<1|e.readBit();const o=this.symbolsByLength[n]?.[t]??-1;if(o>=0)return o}throw new Error("deflate: invalid huffman code")}}let k,R;function $(){if(!k){const e=new Array(288);for(let t=0;t<=143;t++)e[t]=8;for(let t=144;t<=255;t++)e[t]=9;for(let t=256;t<=279;t++)e[t]=7;for(let t=280;t<=287;t++)e[t]=8;k=new L(e)}return k}function D(){return R||(R=new L(new Array(32).fill(5))),R}function X(e,t){e.alignToByte();const n=e.readUint16LE();if(65535&(n^~e.readUint16LE()))throw new Error("deflate: invalid stored block length");for(let o=0;o<n;o++)t.writeByte(e.readByte())}function V(e,t,n,o){for(;;){const r=n.decode(e);if(r<256){t.writeByte(r);continue}if(256===r)return;if(r>285)throw new Error("deflate: invalid literal/length symbol");const s=r-257,i=_[s]+e.readBits(O[s]),a=o.decode(e);if(a>29)throw new Error("deflate: invalid distance symbol");const l=N[a]+e.readBits(F[a]);t.copy(l,i)}}function j(e){const t=e.readBits(5)+257,n=e.readBits(5)+1,o=e.readBits(4)+4,r=new Array(19).fill(0);for(let t=0;t<o;t++)r[B[t]]=e.readBits(3);const s=function(e,t,n){const o=[];for(;o.length<n;){const r=t.decode(e);if(r<=15){o.push(r);continue}let s,i;switch(r){case 16:if(0===o.length)throw new Error("deflate: invalid code length repeat");i=o[o.length-1],s=e.readBits(2)+3;break;case 17:i=0,s=e.readBits(3)+3;break;case 18:i=0,s=e.readBits(7)+11;break;default:throw new Error("deflate: invalid code length symbol")}if(o.length+s>n)throw new Error("deflate: invalid code length repeat");for(let e=0;e<s;e++)o.push(i)}return o}(e,new L(r),t+n),i=s.slice(0,t),a=s.slice(t);if(0===i[256])throw new Error("deflate: missing end-of-block code");return{literalLengthTree:new L(i),distanceTree:new L(a,{allowEmpty:!0})}}function U(e,t,n,o,r){let s,i,a,l;if(o?(K(t,n,25,r,"FBX node header"),s=z(e,n),i=z(e,n+8),a=z(e,n+16),l=25):(K(t,n,13,r,"FBX node header"),s=e.getUint32(n,!0),i=e.getUint32(n+4,!0),a=e.getUint32(n+8,!0),l=13),0===s)return null;if(s<=n||s>r)throw new Error(`Invalid FBX node end offset ${s} at offset ${n}`);const c=t[n+l-1];K(t,n+l,c,s,"FBX node name");const u=Z(t,n+l,c);let f=n+l+c;const p=f+a;if(p>s)throw new Error(`Invalid FBX property list length for node '${u}' at offset ${n}`);const d=[];for(let n=0;n<i;n++){const n=W(e,t,f,p);d.push(n.property),f=n.nextOffset}if(f!==p)throw new Error(`Invalid FBX property list length for node '${u}' at offset ${n}`);const h=[];if(f<s)for(;f<s;){const n=U(e,t,f,o,s);if(null===n)break;if(n.endOffset<=f||n.endOffset>s)throw new Error(`Invalid FBX child node end offset ${n.endOffset} at offset ${f}`);h.push(n.node),f=n.endOffset}return{node:{name:u,properties:d,children:h},endOffset:s}}function W(e,t,n,o){K(t,n,1,o,"FBX property type");const r=String.fromCharCode(t[n]);switch(n+=1,r){case"C":K(t,n,1,o,"FBX boolean property");return{property:{type:"boolean",value:0!==t[n]},nextOffset:n+1};case"Y":K(t,n,2,o,"FBX int16 property");return{property:{type:"int16",value:e.getInt16(n,!0)},nextOffset:n+2};case"I":K(t,n,4,o,"FBX int32 property");return{property:{type:"int32",value:e.getInt32(n,!0)},nextOffset:n+4};case"F":K(t,n,4,o,"FBX float32 property");return{property:{type:"float32",value:e.getFloat32(n,!0)},nextOffset:n+4};case"D":K(t,n,8,o,"FBX float64 property");return{property:{type:"float64",value:e.getFloat64(n,!0)},nextOffset:n+8};case"L":K(t,n,8,o,"FBX int64 property");return{property:{type:"int64",value:G(e,n)},nextOffset:n+8};case"S":{K(t,n,4,o,"FBX string property length");const r=e.getUint32(n,!0);K(t,n+4,r,o,"FBX string property data");const s=function(e,t,n){return new TextDecoder("utf-8").decode(e.subarray(t,t+n))}(t,n+4,r);return{property:{type:"string",value:s},nextOffset:n+4+r}}case"R":{K(t,n,4,o,"FBX raw property length");const r=e.getUint32(n,!0);K(t,n+4,r,o,"FBX raw property data");return{property:{type:"raw",value:t.slice(n+4,n+4+r)},nextOffset:n+4+r}}case"f":return Y(e,t,n,"float32[]",4,o);case"d":return Y(e,t,n,"float64[]",8,o);case"i":return Y(e,t,n,"int32[]",4,o);case"l":return Y(e,t,n,"int64[]",8,o);case"b":return Y(e,t,n,"boolean[]",1,o);default:throw new Error(`Unknown FBX property type: '${r}' at offset ${n-1}`)}}function Y(e,t,n,o,r,s){K(t,n,12,s,`FBX array property header for ${o}`);const i=e.getUint32(n,!0),a=e.getUint32(n+4,!0),l=e.getUint32(n+8,!0),c=i*r;let u;if(K(t,n+=12,l,s,`FBX array property data for ${o}`),1===a){u=function(e,t){if(!Number.isInteger(t)||t<0)throw new Error("zlib: invalid expected length");if(e.byteLength<6)throw new Error("zlib: unexpected end of input");const n=e[0],o=e[1];if(8!=(15&n)||n>>4>7||((n<<8)+o)%31!=0)throw new Error("zlib: invalid header");if(32&o)throw new Error("zlib: preset dictionary not supported");const r=new P(e,2,e.byteLength-4),s=new E(t);let i=!1;for(;!i;)switch(i=1===r.readBits(1),r.readBits(2)){case 0:X(r,s);break;case 1:V(r,s,$(),D());break;case 2:{const{literalLengthTree:e,distanceTree:t}=j(r);V(r,s,e,t);break}default:throw new Error("deflate: invalid block type")}if(r.byteOffset<e.byteLength-4)throw new Error("zlib: trailing deflate data");s.finish();const a=(e[e.byteLength-4]<<24|e[e.byteLength-3]<<16|e[e.byteLength-2]<<8|e[e.byteLength-1])>>>0;if(s.adler32()!==a)throw new Error("zlib: adler32 mismatch");return s.bytes}(t.subarray(n,n+l),c)}else{if(0!==a)throw new Error(`Unsupported FBX array encoding: ${a}`);if(l!==c)throw new Error(`Invalid FBX array byte length for ${o}`);u=t.slice(n,n+l)}const f=u.buffer.slice(u.byteOffset,u.byteOffset+u.byteLength);let p;switch(o){case"float32[]":p=new Float32Array(f);break;case"float64[]":p=new Float64Array(f);break;case"int32[]":p=new Int32Array(f);break;case"boolean[]":p=u;break;case"int64[]":p=function(e){const t=new DataView(e.buffer,e.byteOffset,e.byteLength),n=new Float64Array(e.byteLength/8);for(let e=0;e<n.length;e++)n[e]=G(t,8*e);return n}(u);break;default:throw new Error(`Unexpected array type: ${o}`)}return{property:{type:o,value:p},nextOffset:n+l}}function K(e,t,n,o,r){if(t<0||n<0||t+n>o||t+n>e.byteLength)throw new Error(`${r}: unexpected end of input`)}function z(e,t){const n=e.getUint32(t,!0);return 4294967296*e.getUint32(t+4,!0)+n}function G(e,t){const n=e.getUint32(t,!0);return 4294967296*e.getInt32(t+4,!0)+n}function Z(e,t,n){let o="";for(let r=0;r<n;r++)o+=String.fromCharCode(e[t+r]);return o}function H(e){const t=new q(e),n=function(e){const t=e.match(/;\s*FBX\s+(\d+)\.(\d+)\.(\d+)/);if(!t)throw new Error("Cannot determine FBX version from ASCII header");return 1e3*parseInt(t[1])+100*parseInt(t[2])+parseInt(t[3])}(e),o=[];for(;!t.isEOF()&&(t.skipWhitespaceAndComments(),!t.isEOF());){const e=J(t);e&&o.push(e)}return{version:n,nodes:o}}var Q;!function(e){e[e.Identifier=0]="Identifier",e[e.Number=1]="Number",e[e.String=2]="String",e[e.OpenBrace=3]="OpenBrace",e[e.CloseBrace=4]="CloseBrace",e[e.Colon=5]="Colon",e[e.Comma=6]="Comma",e[e.Star=7]="Star",e[e.EOF=8]="EOF"}(Q||(Q={}));class q{constructor(e){this.text=e,this.pos=0,this.len=e.length}isEOF(){return this.skipWhitespaceAndComments(),this.pos>=this.len}peek(){const e=this.pos,t=this.next();return this.pos=e,t}next(){if(this.skipWhitespaceAndComments(),this.pos>=this.len)return{type:8,value:"",pos:this.pos};const e=this.text[this.pos],t=this.pos;switch(e){case"{":return this.pos++,{type:3,value:"{",pos:t};case"}":return this.pos++,{type:4,value:"}",pos:t};case":":return this.pos++,{type:5,value:":",pos:t};case",":return this.pos++,{type:6,value:",",pos:t};case"*":return this.pos++,{type:7,value:"*",pos:t};case'"':return this.readString();default:if(this.isNumberStart(e))return this.readNumber();if(this.isIdentStart(e))return this.readIdentifier();throw new Error(`Unexpected character '${e}' at position ${this.pos}`)}}expect(e){const t=this.next();if(t.type!==e)throw new Error(`Expected token type ${e} but got ${t.type} ('${t.value}') at pos ${t.pos}`);return t}isNextNodeStart(){const e=this.pos;if(this.skipWhitespaceAndComments(),this.pos<this.len&&this.isIdentStart(this.text[this.pos])){for(;this.pos<this.len&&this.isIdentChar(this.text[this.pos]);)this.pos++;for(;this.pos<this.len&&(" "===this.text[this.pos]||"\t"===this.text[this.pos]);)this.pos++;const t=this.pos<this.len&&":"===this.text[this.pos];return this.pos=e,t}return this.pos=e,!1}skipWhitespaceAndComments(){for(;this.pos<this.len;){const e=this.text[this.pos];if(" "===e||"\t"===e||"\r"===e||"\n"===e)this.pos++;else{if(";"!==e)break;for(;this.pos<this.len&&"\n"!==this.text[this.pos];)this.pos++}}}readString(){const e=this.pos;this.pos++;let t="";for(;this.pos<this.len&&'"'!==this.text[this.pos];)"\\"===this.text[this.pos]&&this.pos+1<this.len?(this.pos++,t+=this.text[this.pos]):t+=this.text[this.pos],this.pos++;return this.pos<this.len&&this.pos++,{type:2,value:t,pos:e}}readNumber(){const e=this.pos;for("-"!==this.text[this.pos]&&"+"!==this.text[this.pos]||this.pos++;this.pos<this.len&&this.isDigit(this.text[this.pos]);)this.pos++;if(this.pos<this.len&&"."===this.text[this.pos])for(this.pos++;this.pos<this.len&&this.isDigit(this.text[this.pos]);)this.pos++;if(this.pos<this.len&&("e"===this.text[this.pos]||"E"===this.text[this.pos]))for(this.pos++,this.pos<this.len&&("+"===this.text[this.pos]||"-"===this.text[this.pos])&&this.pos++;this.pos<this.len&&this.isDigit(this.text[this.pos]);)this.pos++;return{type:1,value:this.text.substring(e,this.pos),pos:e}}readIdentifier(){const 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t=e.next();n.push(Number(t.value))}}else e.next()}if(n.length!==t)throw new Error(`ASCII FBX array declared ${t} values but parsed ${n.length}`);return n}(e,n);r.push({type:"float64[]",value:new Float64Array(t)})}return e.expect(4),{name:o,properties:r,children:s}}for(i=e.peek();3!==i.type&&4!==i.type&&8!==i.type;){if(1===i.type){const t=e.next(),n=ee(t.value);!Number.isInteger(n)||t.value.includes(".")||t.value.includes("e")||t.value.includes("E")?r.push({type:"float64",value:n}):r.push({type:te(n)?"int32":"int64",value:n})}else if(2===i.type){const t=e.next();r.push({type:"string",value:t.value})}else if(0===i.type){if(e.isNextNodeStart())break;const t=e.next();r.push({type:"string",value:t.value})}else{if(6!==i.type)break;e.next()}i=e.peek()}if(i=e.peek(),3===i.type){for(e.next();i=e.peek(),4!==i.type&&8!==i.type;){const t=J(e);if(!t)break;s.push(t)}e.expect(4)}return{name:o,properties:r,children:s}}function ee(e){return Number(e)}function te(e){return e>=-2147483648&&e<=2147483647}function ne(e,t){return e.children.find(e=>e.name===t)}function oe(e,t){return e.nodes.find(e=>e.name===t)}function re(e,t){if(t<e.properties.length)return e.properties[t].value}function se(e){const t=e.indexOf("\0");t>=0&&(e=e.substring(0,t));const n=e.indexOf("::");return n>=0&&(e=e.substring(n+2)),e}function ie(e,t,n){const o=e.childrenOf.get(t)??[],r=[];for(const t of o){const o=e.objects.get(t.id);!o||n&&o.name!==n||r.push({id:t.id,node:o,propertyName:t.propertyName})}return r}function ae(e){return function(e){if("number"==typeof e){if(!Number.isSafeInteger(e))throw new Error(`Unsafe FBX object ID ${e.toString()}: object IDs must be safe integers.`);return e}}(e)}function le(e,t){const n=ae(e);if(void 0!==n)return n;if("string"!=typeof e)return;const o=se(e);return"Scene"===o?0:t.get(o)}function 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